The idealized six-horizon soil profile is not a good representation of all soils because there are big variations, mainly because of the climate factors.
Explanation:
When a soil profile is presented, it is often the one that pretty much everyone knows, the six-horizon profile. This is not a good representation of all soils though, or rather for most of the soils, as the situation in reality is much different. This six-horizon profile is actually idealized, or rather as to how a soil profile should look like.
Lot of the soil types across the world don't have six horizons, or their depths are much different than in the idealized profile. The main reason for this is the climate, as it is the basic factor that later influences all the other ones that influence the formation of soil. We can take the desert soil and polygonal soil as examples:
- The desert soil is very poor in nutrients. The O horizon is either few mm or non-existent. It contains salts.
- The polygonal soil is also very poor in nutrients, with the O horizon also being just few mm. This soil lacks rock base, as well as depth, as it is often only few cm deep.
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Answer:
C.
Explanation:
Homeostasis refers to the tendency for the human body to attempt to maintain a certain state even during changes in environment, activity, intake, etc. Options A, B, and D all refer to instances where the body departs from its usual state. While the scenario in Option C does describe a change in environment, it also describes the reaction of the body that brings its internal systems back to a certain state of fluid level.
D) all of above
Explanation:
Essays, fiction and biographies can be used as strategy and source of making inferences while reading.
Journals and publications are also good strategical resources during reading.
- An essay is usually an analytic or descriptive composition about a subject.
- A fiction is work that is based on imagination and it is not true most of the times.
- A biography is an account of one's life history.
All of these can be cited a source while researching and reading.
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Answer: Increase in ambient global temperatures.
Recyling energy to be used again
Regulation of oxygen and carbon dioxide levels
An increase of erosion and siltation along waterways
Explanation:
